Theoretical P-Wave Travel Times

Magnitude 4.8 TONGA
Tuesday, April 30, 2013 at 14:49:34 UTC

Theoretical P-wave Travel Times

This map shows the predicted (theoretical) travel times, in minutes, of the compressional (P) wave from the earthquake location to points around the globe. The travel times are computed using the spherically-symmetric IASP91 reference earth velocity model. The heavy black lines shown are the approximate distances to the P-wave shadow zone (103 to 140 degrees).

Theoretical P-Wave Travel Times
City Distance
Travel Time
Arrival Time
Wellington, New Zealand 23.67 5:11.811:49:29.8P
Brisbane, Australia 30.19 6:10.411:50:28.4P
Honolulu, Hawaii 43.66 8:04.711:52:22.7P
Agana, Guam 50.90 9:01.111:53:19.1P
Tokyo, Japan 69.0911:06.211:55:24.2P
San Francisco, California 75.3211:43.411:56:01.4P
Los Angeles, California 75.8011:46.211:56:04.2P
Phoenix, Arizona 79.7912:08.411:56:26.4P
Palmer Station, Antarctica 80.2212:10.811:56:28.8P
Seattle, Washington 81.7512:18.911:56:36.9P
Anchorage, Alaska 82.5912:23.311:56:41.3P
Mexico City, Mexico 83.9312:30.211:56:48.2P
Albuquerque, New Mexico 84.5212:33.211:56:51.2P
Beijing, China 86.4312:42.711:57:00.7P
Golden, Colorado 87.6712:48.711:57:06.7P
Brownsville, Texas 87.8212:49.411:57:07.4P
Wichita, Kansas 92.4413:11.011:57:29.0P
Lima, Peru 93.7813:17.111:57:35.1P
St. Louis, Missouri 97.9913:36.211:57:54.2P
Duluth, Minnesota 99.1413:41.311:57:59.3Pdiff
Knoxville, Tennessee 101.0913:49.911:58:07.9Pdiff
Miami, Florida 102.5513:56.411:58:14.4Pdiff
Kathmandu, Nepal 106.6314:14.511:58:32.5Pdiff
Washington, D.C. 108.0614:20.811:58:38.8Pdiff
Philadelphia, Pennsylvania 109.6614:28.011:58:46.0Pdiff
Ottawa, Canada 110.0114:29.511:58:47.5Pdiff
New York, New York 110.6514:32.311:58:50.3Pdiff
Boston, Massachusetts 113.0114:42.811:59:00.8Pdiff
San Juan, Puerto Rico 113.4414:44.811:59:02.8Pdiff
Bangor, Maine 114.8614:51.111:59:09.1Pdiff
Moscow, Russia 135.7516:23.812:00:41.8Pdiff
Bergen, Norway 138.7516:37.112:00:55.1Pdiff
Nairobi, Kenya 142.4616:53.612:01:11.6Pdiff
London, England 147.4419:42.112:04:00.1PKPdf
Rome, Italy 156.3219:55.912:04:13.9PKPdf

Travel Time Information and Calculator

Preliminary Earthquake Report
U.S. Geological Survey, National Earthquake Information Center
World Data Center for Seismology, Denver